The use of fibre-optic techniques in clinical diagnosis and visual assessment of experimental intrauterine therapy in mares.

This research used fibre-optic technology, intrauterine fibroscopy, to examine and diagnose fertility issues in mares, comparing the method to uterine biopsy and rectal palpation. It also examined the impact of infusing various antibiotics and disinfectants into the uteri of healthy mares.

Objective and Methodology

• The study aimed to test the efficacy of using intrauterine fibroscopy for diagnosing subfertility in mares and to observe the effects of infusing various antibiotics and disinfectants into the uteri.
• For the first part of the study, the researchers utilized intrauterine fibroscopy to evaluate 40 mares with known subfertility. The findings from fibroscopy were compared to results from other established diagnostic techniques such as uterine biopsy and rectal palpation.
• The second part involved visual evaluation of the consequences of infusing different antibiotics and disinfectants into the uteri of healthy mares during dioestrous (a stage in the estrous cycle).

Findings

• Through fibroscopy, the researchers found abnormalities such as transluminal adhesions, endometrial cysts, diffuse fibrosis, fluid accumulation, and myometrial tumours in 26 out of the 40 examined mares.
• They concluded that although fibroscopy did not outperform uterine biopsy in detection, it had an edge over rectal palpation when used solely.
• Concerning the infusion study, no severe pathological changes were seen three days after the infusion of potassium penicillin, chloramphenicol succinate, or a soluble oxytetracycline powder in a dextrose base.
• However, Lugol’s solution induced severe inflammation, fibrin deposition, and ulceration of the endometrium. Additionally, Ampicillin resulted in a white precipitate that adherred to the the endometrium for 10 days post-treatment.

Conclusions

• The research concluded that intrauterine fibroscopy is a useful diagnostic tool for identifying fertility issues in mares, particularly when uterine biopsy is not an option. However, it’s still not a superior technique to uterine biopsy.
• The findings also informed the selection of antibiotics and disinfectants for uterine treatment, stressing that while some antibiotics caused no severe changes, others might trigger inflammation or other undesired effects.